I've been spending a day trying to install this tag cloud module mostly because I don't know much about webdev/drupal/git. Anyways the module is available and working properly afaik for Drupal 6. However due to the (bad) advice of my friend David, I decided to use Drupal 7 instead which has a lot of incompatibilities. This is what happened after upload and installation of the tarball from developer berke's git repository

Fatal error: Call to undefined function db_rewrite_sql() in /modules/tagadelic/tagadelic.module on line 234